ec18435bc5d5a6915fa2477ac2351fc622c76872
[linux-3.10.git] / arch / arm / mach-omap2 / board-omap3logic.c
1 /*
2  * linux/arch/arm/mach-omap2/board-omap3logic.c
3  *
4  * Copyright (C) 2010 Li-Pro.Net
5  * Stephan Linz <linz@li-pro.net>
6  *
7  * Copyright (C) 2010 Logic Product Development, Inc.
8  * Peter Barada <peter.barada@logicpd.com>
9  *
10  * Modified from Beagle, EVM, and RX51
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License version 2 as
14  * published by the Free Software Foundation.
15  */
16
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/platform_device.h>
20 #include <linux/delay.h>
21 #include <linux/err.h>
22 #include <linux/clk.h>
23 #include <linux/io.h>
24 #include <linux/gpio.h>
25
26 #include <linux/regulator/machine.h>
27
28 #include <linux/i2c/twl.h>
29 #include <linux/mmc/host.h>
30
31 #include <mach/hardware.h>
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35
36 #include "mux.h"
37 #include "hsmmc.h"
38 #include "timer-gp.h"
39 #include "control.h"
40 #include "common-board-devices.h"
41
42 #include <plat/mux.h>
43 #include <plat/board.h>
44 #include <plat/common.h>
45 #include <plat/gpmc-smsc911x.h>
46 #include <plat/gpmc.h>
47 #include <plat/sdrc.h>
48
49 #define OMAP3LOGIC_SMSC911X_CS                  1
50
51 #define OMAP3530_LV_SOM_MMC_GPIO_CD             110
52 #define OMAP3530_LV_SOM_MMC_GPIO_WP             126
53 #define OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ       152
54
55 #define OMAP3_TORPEDO_MMC_GPIO_CD               127
56 #define OMAP3_TORPEDO_SMSC911X_GPIO_IRQ         129
57
58 static struct regulator_consumer_supply omap3logic_vmmc1_supply[] = {
59         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
60 };
61
62 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
63 static struct regulator_init_data omap3logic_vmmc1 = {
64         .constraints = {
65                 .name                   = "VMMC1",
66                 .min_uV                 = 1850000,
67                 .max_uV                 = 3150000,
68                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
69                                         | REGULATOR_MODE_STANDBY,
70                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
71                                         | REGULATOR_CHANGE_MODE
72                                         | REGULATOR_CHANGE_STATUS,
73         },
74         .num_consumer_supplies  = ARRAY_SIZE(omap3logic_vmmc1_supply),
75         .consumer_supplies      = omap3logic_vmmc1_supply,
76 };
77
78 static struct twl4030_gpio_platform_data omap3logic_gpio_data = {
79         .gpio_base      = OMAP_MAX_GPIO_LINES,
80         .irq_base       = TWL4030_GPIO_IRQ_BASE,
81         .irq_end        = TWL4030_GPIO_IRQ_END,
82         .use_leds       = true,
83         .pullups        = BIT(1),
84         .pulldowns      = BIT(2)  | BIT(6)  | BIT(7)  | BIT(8)
85                         | BIT(13) | BIT(15) | BIT(16) | BIT(17),
86 };
87
88 static struct twl4030_platform_data omap3logic_twldata = {
89         .irq_base       = TWL4030_IRQ_BASE,
90         .irq_end        = TWL4030_IRQ_END,
91
92         /* platform_data for children goes here */
93         .gpio           = &omap3logic_gpio_data,
94         .vmmc1          = &omap3logic_vmmc1,
95 };
96
97 static int __init omap3logic_i2c_init(void)
98 {
99         omap3_pmic_init("twl4030", &omap3logic_twldata);
100         return 0;
101 }
102
103 static struct omap2_hsmmc_info __initdata board_mmc_info[] = {
104         {
105                 .name           = "external",
106                 .mmc            = 1,
107                 .caps           = MMC_CAP_4_BIT_DATA,
108                 .gpio_cd        = -EINVAL,
109                 .gpio_wp        = -EINVAL,
110         },
111         {}      /* Terminator */
112 };
113
114 static void __init board_mmc_init(void)
115 {
116         if (machine_is_omap3530_lv_som()) {
117                 /* OMAP3530 LV SOM board */
118                 board_mmc_info[0].gpio_cd = OMAP3530_LV_SOM_MMC_GPIO_CD;
119                 board_mmc_info[0].gpio_wp = OMAP3530_LV_SOM_MMC_GPIO_WP;
120                 omap_mux_init_signal("gpio_110", OMAP_PIN_OUTPUT);
121                 omap_mux_init_signal("gpio_126", OMAP_PIN_OUTPUT);
122         } else if (machine_is_omap3_torpedo()) {
123                 /* OMAP3 Torpedo board */
124                 board_mmc_info[0].gpio_cd = OMAP3_TORPEDO_MMC_GPIO_CD;
125                 omap_mux_init_signal("gpio_127", OMAP_PIN_OUTPUT);
126         } else {
127                 /* unsupported board */
128                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
129                 return;
130         }
131
132         omap2_hsmmc_init(board_mmc_info);
133         /* link regulators to MMC adapters */
134         omap3logic_vmmc1_supply.dev = board_mmc_info[0].dev;
135 }
136
137 static struct omap_smsc911x_platform_data __initdata board_smsc911x_data = {
138         .cs             = OMAP3LOGIC_SMSC911X_CS,
139         .gpio_irq       = -EINVAL,
140         .gpio_reset     = -EINVAL,
141 };
142
143 /* TODO/FIXME (comment by Peter Barada, LogicPD):
144  * Fix the PBIAS voltage for Torpedo MMC1 pins that
145  * are used for other needs (IRQs, etc).            */
146 static void omap3torpedo_fix_pbias_voltage(void)
147 {
148         u16 control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
149         u32 reg;
150
151         if (machine_is_omap3_torpedo())
152         {
153                 /* Set the bias for the pin */
154                 reg = omap_ctrl_readl(control_pbias_offset);
155
156                 reg &= ~OMAP343X_PBIASLITEPWRDNZ1;
157                 omap_ctrl_writel(reg, control_pbias_offset);
158
159                 /* 100ms delay required for PBIAS configuration */
160                 msleep(100);
161
162                 reg |= OMAP343X_PBIASLITEVMODE1;
163                 reg |= OMAP343X_PBIASLITEPWRDNZ1;
164                 omap_ctrl_writel(reg | 0x300, control_pbias_offset);
165         }
166 }
167
168 static inline void __init board_smsc911x_init(void)
169 {
170         if (machine_is_omap3530_lv_som()) {
171                 /* OMAP3530 LV SOM board */
172                 board_smsc911x_data.gpio_irq =
173                                         OMAP3530_LV_SOM_SMSC911X_GPIO_IRQ;
174                 omap_mux_init_signal("gpio_152", OMAP_PIN_INPUT);
175         } else if (machine_is_omap3_torpedo()) {
176                 /* OMAP3 Torpedo board */
177                 board_smsc911x_data.gpio_irq = OMAP3_TORPEDO_SMSC911X_GPIO_IRQ;
178                 omap_mux_init_signal("gpio_129", OMAP_PIN_INPUT);
179         } else {
180                 /* unsupported board */
181                 printk(KERN_ERR "%s(): unknown machine type\n", __func__);
182                 return;
183         }
184
185         gpmc_smsc911x_init(&board_smsc911x_data);
186 }
187
188 static void __init omap3logic_init_early(void)
189 {
190         omap2_init_common_infrastructure();
191         omap2_init_common_devices(NULL, NULL);
192 }
193
194 #ifdef CONFIG_OMAP_MUX
195 static struct omap_board_mux board_mux[] __initdata = {
196         { .reg_offset = OMAP_MUX_TERMINATOR },
197 };
198 #endif
199
200 static void __init omap3logic_init(void)
201 {
202         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
203         omap3torpedo_fix_pbias_voltage();
204         omap3logic_i2c_init();
205         omap_serial_init();
206         board_mmc_init();
207         board_smsc911x_init();
208
209         /* Ensure SDRC pins are mux'd for self-refresh */
210         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
211         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
212 }
213
214 MACHINE_START(OMAP3_TORPEDO, "Logic OMAP3 Torpedo board")
215         .boot_params    = 0x80000100,
216         .map_io         = omap3_map_io,
217         .init_early     = omap3logic_init_early,
218         .init_irq       = omap_init_irq,
219         .init_machine   = omap3logic_init,
220         .timer          = &omap_timer,
221 MACHINE_END
222
223 MACHINE_START(OMAP3530_LV_SOM, "OMAP Logic 3530 LV SOM board")
224         .boot_params    = 0x80000100,
225         .map_io         = omap3_map_io,
226         .init_early     = omap3logic_init_early,
227         .init_irq       = omap_init_irq,
228         .init_machine   = omap3logic_init,
229         .timer          = &omap_timer,
230 MACHINE_END